Home / 38,785.91-58,187.97-12,489.66

Finding the Fourth Proportional to 38,785.91, 58,187.97 and 12,489.66

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Solution

The fourth proportional to 38,785.91, 58,187.97 and 12,489.66 is: 18,737.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,785.91 : 58,187.97 = 12,489.66 : x
  2. Step 2: Convert to fraction form
    38,785.91/58,187.97 = 12,489.66/x
  3. Step 3: Cross multiply
    38,785.91x = 58,187.97 × 12,489.66
  4. Step 4: Simplify right side
    38,785.91x = 726,747,961.39
  5. Step 5: Solve for x
    x = 726,747,961.39/38,785.91
  6. Step 6: Final answer
    x = 18,737.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.